Not sure. They normally cause a dark picture like low emission. Bob Waterman, CET® #RI-28 Master Technician License #9109 Service Manager / Parts Manager Gemini Computer, TV, & Security Alarms (508)695-7302 (508)695-7769 FAX geminitv@xxxxxxxxxxx ----- Original Message ----- From: "peggs" <peggs@xxxxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx>; <techassist@xxxxxxxxxxxxx> Sent: Thursday, January 26, 2006 1:39 PM Subject: [TechAssist] Re: Hitachi 46" PTV I took a look at the CRT PCB's yesterday,thought I saw one of the Spark Gaps........ are they little white ones ??? Will they cause the symptoms I'm seeing ??? Peggs At 04:29 AM 1/26/06, Gemini Computer & TV wrote: >Try cleaning them first by blowing them out with compressed air. I have >always been able to clean them, never had to replace a spark gap yet. > >Bob Waterman, CET® #RI-28 >Master Technician License #9109 >Service Manager / Parts Manager >Gemini Computer, TV, & Security Alarms >(508)695-7302 >(508)695-7769 FAX >geminitv@xxxxxxxxxxx > > >----- Original Message ----- >From: "peggs" <peggs@xxxxxxxxxxxxx> >To: <techassist@xxxxxxxxxxxxx>; <techassist@xxxxxxxxxxxxx> >Sent: Wednesday, January 25, 2006 7:18 PM >Subject: [TechAssist] Re: Hitachi 46" PTV > > >got a part number for the spark gaps ??? > >Peggs > >At 11:33 AM 1/25/06, tvservice wrote: > >the focus block has been an issue on these sets > >also clean or replace all 6 spark gaps 2 on each of the crt boards > >then realign gray scale > >be sure customer settings are in normal/standard > > > >Robert > >tvservice@xxxxxxxxxxxxx > >H & H Electronics Inc > >http://supertek.igniteinc.biz > > > >----- Original Message ----- > >From: "peggs" <peggs@xxxxxxxxxxxxx> > >To: <techassist@xxxxxxxxxxxxx> > >Sent: Wednesday, January 25, 2006 2:22 PM > >Subject: [TechAssist] Hitachi 46" PTV > > > > > > > could someone forward this to Alvie Rodgers for me....... > > > model 46F510 > > > HD Monitor > > > Oct. 2004 > > > > > > Dark and Out Of Focus Picture. > > > Slight increase of the G2 controls(all) has given a Bright and > > > Balanced(Gray Scale) Picture....... and actually Increasing the Focus > > > Controls(all) has brought the Picture in focus as well,problem is the > >Focus > > > Controls are now wide open(turned all the way up).Picture looks good > > > now,but how's it going to look in 6 months ??? > > > The Focus Voltage coming from the Fly is 10Kv. > > > Focus Voltage coming out of the Focus Block(going TO the picture tubes) >is > > > app. 7Kv(controls wide open). Should it be 10Kv with the controls wide > >open > > > ??? > > > If so,I may have a bad Focus Block. > > > If not,my fear is I have 3 Bad Picture tubes...... how do I check them >??? > > > I guess it's possible I may have 3 Bad CRT Sockets...... > > > Could Low HV cause this ???....... Focus Voltage coming from Fly seems > > > plenty High enough..... HOT B+ is 115v(I believe... found it coming from > >PS > > > PCB) > > > > > > Tritronics does not have a part number for the HV Block......... any >help > > > out there ??? > > > The (3) Picture Tubes are all around $172(my cost) from Tritronics..... > > > which sounds dirt cheap.... could that be because Hitachi is having a > > > problem with these tubes ??? > > > > > > I'm headed to the Hitachi site.... if it's up. > > > > > > Peggs > > > Peggs' Electronics > > > 1519 West 2nd Street > > > Owensboro,KY 42301 > > > 270-926-4968 > > > fax 270-686-7399 > > > peggs@xxxxxxxxxxxxx > > > > > > > -------------------------------------------------------------------------- > >--- > > > This Email List is accessible to the general public through search > >engines. Remove: http://www.tech-assist.org/remove.htm > > > Set Vacation > >mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation > > > Lost Password: http://www.tech-assist.org and select "Login Problems?". > > > Email Archives: //www.freelists.org/archives/techassist/ > > > > > > > > > -- > > > No virus found in this incoming message. > > > Checked by AVG Free Edition. > > > Version: 7.1.375 / Virus Database: 267.14.22/239 - Release Date: 1/24/06 > > > > > > > > > >--------------------------------------------------------------------------- >-- > >This Email List is accessible to the general public through search > >engines. Remove: http://www.tech-assist.org/remove.htm > >Set Vacation >mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation > >Lost Password: http://www.tech-assist.org and select "Login Problems?". > >Email Archives: //www.freelists.org/archives/techassist/ > >--------------------------------------------------------------------------- - >- >This Email List is accessible to the general public through search engines. >Remove: http://www.tech-assist.org/remove.htm >Set Vacation >mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation >Lost Password: http://www.tech-assist.org and select "Login Problems?". >Email Archives: //www.freelists.org/archives/techassist/ > > >--------------------------------------------------------------------------- -- >This Email List is accessible to the general public through search >engines. Remove: http://www.tech-assist.org/remove.htm >Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation >Lost Password: http://www.tech-assist.org and select "Login Problems?". >Email Archives: //www.freelists.org/archives/techassist/ ---------------------------------------------------------------------------- - This Email List is accessible to the general public through search engines. Remove: http://www.tech-assist.org/remove.htm Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/ ----------------------------------------------------------------------------- This Email List is accessible to the general public through search engines. Remove: http://www.tech-assist.org/remove.htm Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/